U.S. Army Corps of Engineers Formerly Utilized Sites Remedial Action Program contractors prepare to brave mucky slopes along the 100-year floodplain near Coldwater Creek to perform gamma walkover surveys in areas along Highway 367 that were previously inaccessible due to excessive foliage and thick brush. Gamma walkover surveys are completed to identify areas where there may be elevated areas of Manhattan Engineer District, early Atomic Energy Commission radiation that require further investigation.